We do a credit toward the 6100.015 upgrade kit. This kit is a 6105 pump, power supply and adapter clamp, the only difference between it and a 6105 you would buy from a dealer is it does not include a magnet holder, it instead retrofits on your existing rail or magnet holder. If you send in your old pump you get a $40 credit toward the upgrade kit, bringing the upgrade price to $199.50. To be eligible for this the 6100 must be dead and non repairable.